Speaker



FIG. 1 is a front, right perspective view of the speaker;

FIG. 2 is front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines showing an exemplar speaker case, vent, and feet arefor illustrative purpose only and form no part of the claimed design.

The ornamental design for a speaker, as shown and described.